Earthwool ® Flexible Slab
For multiple applications
Earthwool Flexible Slab is a multi-purpose, flexible, non-combustible, rock mineral wool
slab specifically designed for installation by friction fitting.
Earthwool Flexible Slab is typically used for the thermal and acoustic insulation of a wide
variety of constructions such as timber and metal stud partitions, timber frame walls and
suspended timber floors.
Earthwool Flexible Slab is manufactured in accordance with BS EN 13162, EN
16001 Energy Management Systems, OHSAS 18001 Occupational Health and Safety
Management Systems, ISO 14001 Environmental Management Systems, and ISO 9001
Quality Management Systems, as certified by Bureau Veritas.
Earthwool Flexible Slab has a thermal
conductivity of 0.035 or 0.037W/mK.
Earthwool Flexible Slab is classified as
Euroclass A1 to BS EN 13501-1.
• Friction fits between studs, joists and
• Provides excellent thermal and acoustic
• Multiple application solution
Earthwool ® Flexible Slab
Earthwool Flexible Slab is odourless, rot proof, non-hygroscopic, does not sustain
vermin and will not encourage the growth of fungi, mould or bacteria.
Earthwool Flexible Slab offers negligible resistance to the passage of water vapour
and has a water vapour resistivity of 5.00MNs/g.m.
Earthwool Flexible Slab represents no known threat to the environment and has zero
Ozone Depletion Potential and zero Global Warming Potential.
Handling and storage
Earthwool Flexible Slab is easy to handle and install, being lightweight and easily cut
to size, where necessary. Earthwool Flexible Slab is supplied in polythene packs which
are designed for short term protection only. For longer term protection on site, the
product should either be stored indoors, or under cover and off the ground. Earthwool
Flexible Slab should not be left permanently exposed to the elements.
Knauf Insulation mineral wool products
made with ECOSE ® Technology benefit
from a formaldehyde-free binder, which
is up to 70% less energy intensive than
traditional binders and is made from
rapidly renewable bio-based materials
instead of petroleum-based chemicals. The
technology has been developed for Knauf
Insulation’s glass and rock mineral wool
products, enhancing their environmental
credentials without affecting the thermal,
acoustic or fire performance. Insulation
products made with ECOSE Technology
contain no dye or artificial colours – the
colour is completely natural.
resistance Length Width Slabs per pack Area per pack
(mm) (W/mK) (m 2 K/W) (mm) (mm) (m 2 )
Earthwool Flexible Slab
140 0.035 4.00 1200 600 3 2.16
140 0.037 3.75 1200 400 4 1.92
100 0.037 2.70 1200 600 5 3.60
100 0.037 2.70 1200 400 6 2.88
90 0.037 2.40 1200 600 5 3.60
70 0.037 1.85 1200 600 8 5.76
60 0.037 1.60 1200 600 8 5.76
60 0.037 1.60 1200 400 10 4.80
50 0.037 1.35 1200 600 10 7.20
50 0.037 1.35 1200 400 12 5.76
All dimensions are nominal
Knauf Insulation Ltd
PO Box 10
Customer Service (sales)
Tel: 0844 800 0135
Technical Advice and Support
Tel: 01744 766 666
Tel: 08700 668 660
Ref: KINE1518DAT - V0513
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